The PCs travel to the library world of Athaeum in search of answers to what happened during the Scoured Stars incident. The planet holds secrets thought to be lost to the rest of the galaxy and viciously guarded by its self-exiled extraplanar curators. A contingent of Hellknights from the Order of the Pyre joins the PCs in their travels to the library, but these Hellknights follow their own mysterious agenda. As the PCs receive special dispensation to investigate Athaeum's vast records, they learn the first truths of the Scoured Stars and take their first steps in unraveling what happened during the Society's greatest mishap.

Content in In Pursuit of the Scoured Past also contributes to the ongoing goals of the Second Seekers (Luwazi Elsebo) faction. Content in this scenario also contributes to the ongoing year of the Scoured Stars storyline.